The BP-cross-Panama pipeline used to run west-to-east to carry Alaska crude oil to Gulf coast refineries.
BP has just started shipping oil across Panama, going the opposite direction. BP completed the process of reversing the pipeline to run east-to-west back in 2009, to carry Bakken oil to west coast refineries.
The pipeline shut down in 1996 as Alaskan crude shipments declined and reopened in 2003 to transport Ecuadorian crude to the Gulf Coast (still west-to-east).
Except for that part about carrying Bakken oil, all the rest is from the linked article; I just thought I would throw that Bakken part in to capture current events.
